7.Bg5White's move of development, though peculiar, appears quite reasonable. The Bishop on Q B 4 is well posted, as long as Black does not play P - K 3; in the latter case, however, Black has the weak Pawn at Q 3.
9.Nxc6Black intended Kt - K 4, R - B sq and Kt - B 5; but in spite of this White should not have exchanged his well posted Knight.
11…b5Black's policy to gain ground on the Queen's side is quite correct.
12.Bd3But now Q - B 2 ought to have been played first, in order to prepare R - Q sq, and also avoid P - K 5.
14…d5Why not 14) ..., Q - B 2 followed by Q R - Q sq? By the advance of the Q P White obtains the unchallenged possession of the point Q 4.
22…g5The threat of this move is of no importance, whilst it clearly weakens the point K B 4 (which is threatened by White's P - Kt 4) and the diagonal, which is commanded by the White K B.
24.a3This part of the game right up to the end is played in excellent style by White. One cannot but admire his artistic treatment of the position.
Emanuel Lasker, The International Chess Congress, St. Petersburg, 1909 (1910) · Public domain · source